1: (3 8 11)

(0 19 5)(1 9 7)(2 16 6)(3)(4 17 15)(8 12 11 13 10)(14 20 18)

2: (10 11 13)

(0 19 5)(1 9 7)(2 16 6)(3)(4 17 15)(8 12 11)(10)(13)(14 20 18)

3: (1 9 7)

(0 19 5)(1)(2 16 6)(3)(4 17 15)(7)(8 12 11)(9)(10)(13)(14 20 18)

4: (2 16 6)

(0 19 5)(1)(2)(3)(4 17 15)(6)(7)(8 12 11)(9)(10)(13)(14 20 18)(16)